Water-tube boiler.



No. 628,044. Patented my 4, |899.

,A E. a. sTETTlNlus. v

WATER TUBE BOILER.

(Application led Jan. 11, 1899.)

iNO Model.)

TH: NNNN ls PETERS 00,. PNoTo-Llwm wAsumsoN, D4 c.

"UNITED STATES PATENT OFFICE.

EDVARD R.v STE'ITINIUS, OF CHICAGO, ILLINOIS, 'ASSIGNOR TO THE`STIRLINGr COMPANY, OF SAME PLACE.

WATER-TUBE BOILER.

YSPEGI1`ICA'lI01\I forming part of Letters Patent No. 628,044, datedJuly 4,1899.

Application filed January ll, 1899. Serial No. 701,794. (No model.)

T0 a/ZZ whom, t may mwen/w' Be it known that-LEDWARD R. SrETTiNrUs,

acitizen'of the United States, residing at Chi-y cago, in the county ofCook and State of Illinois, have invented a new and useful Improvementin VVater-Tube Boilers, of which the fol-- theinvention'consistsin thefeatures and com-v binations hereinafter described and claimed.

In constructing a boiler in a/ccordance with my invention I useran upperdrum A, divided into compartments by diaphragms` or partitions d and a',the former being perforated from bottom to'topand the latter perforatedabove the water-line only, a lower drum B, having internal battle-platest) and b', watertubes C, communicatingr between the upper and lowerdru1ns,tirebrick walls or partitions D and D',arranged verticallyamongthe tubes, and a casing E, surrounding or inclosing the variousfpartsforming the' boiler proper.

There are of course afirepla'ce, a chimney, and other parts or details;but as these will be readily understood nospecial description thereof isconsidered necessary.

In operation feed-water is introduced into the upperdrumthroughtheinletct2,behind the vertical rear wall or partition D', andimmediately passes down through the tubes into the rear portion of thelower drum, where, owing to previous heating, a considerable portion ofits sedi ment is deposited,which sediment maybe removedv by a blow-oitb2 or otherwise. Passing over the bafie-plate b and down under t-hebattle-plate b the water goes forward in the mud-drum and up through thetubes forward of the front vertical wall or partition D into the frontportion of the upper drum, whence, the perforatedv partition a,notpreventing, it again passes down through the tubesbetween the twovertical walls into the lower mud-drum, and so on in circuit.

The advantages of my invention are that it provides, first, a compactconstruction having an upper drum and a lower drum, the former beingsubdivided into three different chambers to provideV for the freecirculation of water without the danger of foaming or improve.

unequal and irregular water-levels and a porA tion of the latter actingas a' settling-cham ber; second, for` gradually heating the feedwater,before it passes into the hottest parts of the boiler, by steam passingthrough 'the' perforated portion of the rear diaphragm 'as well as bythe' escaping gases comingin contact with the tubes forming the rearbank,thus

performing the functions ot' an 'economizer or live-steam puriier, and,third, the separation of the tubes into different `banks is such` thatthe gases are .compelled to make three izing the highest possibleproportion of the heat units contained in the fuel.

Although vI prefer to use my improvements together, it will of course beunderstood that this is not'necessary, the same being capable ofseparate use, and generally it will be understood that'I do not intend`to limit myself to minor features or details of construction, it beingmy intention to vary form or construction, omit parts, or useequivalents as circumstances may suggest or render expedient.

1. In a vertical water-tube boiler, the oombination of an upper drumprovided with a front an intermediate and a rear compartment separatedone from the other by diaphragms permitting free communication betweenthe front and intermediate compartmentsand closing communication exceptvat the top between the intermediate and rearcompartments,'alowermud-drum, tubes connecting the upper and lowerdrums, and vertical walls or partitions in the tube-chamber, one wallextending upward and the other downward dividing the tubes into sectionscorresponding to the compartments of the IOO connecting the upper andlower drums, a Vertical wall or partition extending upwardly between thetubes, a vertical wall or partition extending downwardly between thetubes, the two walls alining with the diaphragms or partitions of theupper drum dividing the tubes into sections corresponding to thecompartments of the upper drum for each section of tubes to havecommunication with itsA tance between the two drums, whereby the courseof the gases is directed in and among 25 the tubes, substantially asdescribed.

4. In a vertical water-tube boiler, the coinbination of an uppersteam-and-water drum having two diaphragins therein arranged in Verticalplanes, the front diaphragm being perforated from bottom to top and therear diaphragm perforated above the water-line only, a lower mud-drumhaving baffle-plates arranged therein in substantially vertical planes,one in rear of the other, tubes connecting the upper and lower drums, avertical Wall or partition extending upwardly among the tubes from thelower drum to a point more than half the distance between the two drums,and a vertical wall or partition in therearthereofextendingdownwardlyamong the tubes from the upper drum to apoint more than half the distance between the two drums, whereby thecourse of the gases is directed in and among the tubes,.substan tiallyas described.

EDVARD R. STETTINIUS.

Witnesses:

EPHRAIM BANNING, BELLE W. BARRY.

